Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5428210 | Journal of Quantitative Spectroscopy and Radiative Transfer | 2014 | 16 Pages |
â¢The spectrum of Br was recorded on a 3-m spectrograph with triggered spark source.â¢Atomic transitions for Br V were identified to established new energy levels.â¢CI calculations with relativistic corrections were made for theoretical predictions.â¢Weighted oscillator strength (gf) and transition probabilities (gA) were calculated.â¢Ionization potential of Br V was determined experimentally.
The fifth spectrum of bromine (Br V) has been studied in the 200-2400 à wavelength region. The spectrum was photographed on a 3-m normal incidence vacuum spectrograph at the St. Francis Xavier University, Antigonish (Canada) and 6.65-m grazing incidence spectrograph at the Zeeman laboratory (Amsterdam). The light sources used were a triggered spark and sliding spark. The ground configuration of Br V is 4s24p. The excited configurations 4s4p2+4s2(4d+5d+5s+6s+7s+5g+6g)+4s4p(5p+4f)+4p24d in the even parity system and the 4p3+4s2(5p+6p+7p+4f)+4s4p4d+4s4p5s configurations in the odd parity system have been studied. Relativistic Hartree-Fock (HFR) and least squares fitted (LSF) parametric calculations have been used to interpret the observed spectrum. 99 levels of Br V have now been established, 43 being new. Among 394 classified spectral lines, 181 are newly classified. The level 4s27s 2S1/2 is revised. We estimate the accuracy of our measured wavelengths for sharp and unblended lines to be±0.005 à . The ionization limit is determined as 479,657±200 cmâ1 (59.470±0.025 eV).